Referees' chief Howard Webb says they've made changes since Liverpool attacker Luis Diaz's disallowed goal by VAR at Tottenham.
Diaz's effort was wrongly ruled out by VAR during Liverpool's 2-1 defeat in London a fortnight ago.
"We've put quite a lot of steps in place to ensure the error that we saw doesn't happen again," Webb told Match Officials: Mic'd Up.
"One of things this brought into sharp focus is the need to reiterate some of those communication protocols which are really valuable in VAR to prevent this type of thing happening.
"We got all of the officials together, we spoke through the need to go through that process very diligently.
"We're really disappointed for the game, we're disappointed for our reputation.
"We worked hard over the subsequent days to have a look at what we needed to do to put in place those safeguards around the communication to avoid that sort of thing happening again."
Webb also said: "We took the unusual step of releasing the audio from this situation not long after it happened.
"We wanted to show everybody what was quickly apparent to us was a pretty significant human error - loss of concentration.
"One of the things that we have to do is put things in place to ensure that should we have human error, it doesn't have the damaging impact that we saw on this occasion.
"We want the on-field referee to communicate to the VAR what the on-field decision is, very clearly. Then the VAR to go back to the on-field referee and acknowledge that they've heard that properly.
"The VAR goes through the process then of checking the situation giving clear direction to the replay operator to get the right angles, speaking to that assistant VAR as they go through that as well, so the assistant VAR can be another check and balance, before communicating to the field, speaking to the AVAR [assistant VAR] to say what their intended direction of travel is going to be.
"Then, at that moment, not just saying 'check complete, check complete' because what are you check completing?"
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